[exim] Advanced option for exim -bt

Hi, again!

I know the option -bt <address> to test the routing for an E-Mail.
I'd like to know, if it is possible to specify a sender address to this
option...

It is very helpful, for example, to test what Exim does with a sender with
DomainKeys...

Is it possible?

Thanks
Luca Bertoncello
(lucabert@???)